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| author | Randall Spangler <rspangler@chromium.org> | 2012-04-20 10:57:07 -0700 |
|---|---|---|
| committer | Randall Spangler <rspangler@chromium.org> | 2012-04-24 12:54:29 -0700 |
| commit | 0d19c59aba807f915f1ea46d273bfebe1ded1db9 (patch) | |
| tree | 7994f84b74ff155c9f73cbef1ec5ad6d146c2da4 /include | |
| parent | dbd896103e468e4d5390548e10e148fd7d440048 (diff) | |
| download | chrome-ec-0d19c59aba807f915f1ea46d273bfebe1ded1db9.tar.gz | |
Implement task profiling
Also tracks the distribution of IRQs, so we can see what's triggering
interrupts.
Task profiling is optional, enabled via CONFIG_TASK_PROFILING.
Signed-off-by: Randall Spangler <rspangler@chromium.org>
BUG=chrome-os-partner:7464
TEST=taskinfo
Change-Id: I266f2b49bff9648cda446210d5a302b460fec244
Diffstat (limited to 'include')
| -rw-r--r-- | include/task.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/task.h b/include/task.h index 5855bdfeb5..79289b1c08 100644 --- a/include/task.h +++ b/include/task.h @@ -8,6 +8,7 @@ #ifndef __EC_TASK_H #define __EC_TASK_H +#include "board.h" #include "common.h" #include "task_id.h" @@ -69,6 +70,16 @@ uint32_t *task_get_event_bitmap(task_id_t tsk); * Returns the bitmap of received events (and clears it atomically). */ uint32_t task_wait_event(int timeout_us); +#ifdef CONFIG_TASK_PROFILING +/* Start tracking an interrupt. + * + * This must be called from interrupt context(!) before the interrupt routine + * is called. */ +void task_start_irq_handler(void *excep_return); +#else +#define task_start_irq_handler(excep_return) +#endif + /* Change the task scheduled after returning from the exception. * * If task_send_event() has been called and has set need_resched flag, @@ -82,7 +93,7 @@ void task_resched_if_needed(void *excep_return); /* Initializes tasks and interrupt controller. */ int task_pre_init(void); -/* Starts task scheduling. */ +/* Starts task scheduling. Does not normally return. */ int task_start(void); /* Enables an interrupt. */ @@ -132,6 +143,7 @@ struct irq_priority { void IRQ_HANDLER(irq)(void) \ { \ void *ret = __builtin_return_address(0); \ + task_start_irq_handler(ret); \ routine(); \ task_resched_if_needed(ret); \ } \ |